As it turned out, Sarah McMillan wasn't the only bitch in Jon and Karyn's lives. Unfortunately, there were others who, given the right circumstances, could push Jon and/or Karyn to use the stone to get revenge on them. People like Jon's own Goth sister Zoe, the "bible-thumper" Baptist girl Nadine Ferguson, even the 50-year old high school librarian Mrs. Finch, to name a few.
So who was it that would feel the wrath of the wishing stone? Which bitch would push Jon and/or Karyn to use the stone to get their revenge?